| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 Alex Trotsenko <alex1973tr@gmail.com> |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the examples of the Qt Toolkit. |
| ** |
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| |
| #include <QtWidgets> |
| #include <QtNetwork> |
| |
| #include "client.h" |
| #include "movieconsumer.h" |
| #include "timeconsumer.h" |
| #include "chatconsumer.h" |
| |
| #include "../shared/sctpchannels.h" |
| |
| Client::Client(QWidget *parent) |
| : QDialog(parent) |
| , consumers(SctpChannels::NumberOfChannels) |
| { |
| setWindowTitle(tr("Multi-stream Client")); |
| |
| sctpSocket = new QSctpSocket(this); |
| |
| QLabel *hostLabel = new QLabel(tr("&Server name:")); |
| QLabel *portLabel = new QLabel(tr("S&erver port:")); |
| |
| hostCombo = new QComboBox; |
| hostCombo->setEditable(true); |
| // find out name of this machine |
| QString name = QHostInfo::localHostName(); |
| if (!name.isEmpty()) { |
| hostCombo->addItem(name); |
| QString domain = QHostInfo::localDomainName(); |
| if (!domain.isEmpty()) |
| hostCombo->addItem(name + QChar('.') + domain); |
| } |
| if (name != QString("localhost")) |
| hostCombo->addItem(QString("localhost")); |
| // find out IP addresses of this machine |
| QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses(); |
| // add non-localhost addresses |
| for (int i = 0; i < ipAddressesList.size(); ++i) { |
| if (!ipAddressesList.at(i).isLoopback()) |
| hostCombo->addItem(ipAddressesList.at(i).toString()); |
| } |
| // add localhost addresses |
| for (int i = 0; i < ipAddressesList.size(); ++i) { |
| if (ipAddressesList.at(i).isLoopback()) |
| hostCombo->addItem(ipAddressesList.at(i).toString()); |
| } |
| |
| portLineEdit = new QLineEdit; |
| portLineEdit->setValidator(new QIntValidator(1, 65535, this)); |
| |
| hostLabel->setBuddy(hostCombo); |
| portLabel->setBuddy(portLineEdit); |
| |
| connectButton = new QPushButton(tr("Connect")); |
| connectButton->setDefault(true); |
| connectButton->setEnabled(false); |
| |
| QPushButton *quitButton = new QPushButton(tr("Quit")); |
| quitButton->setAutoDefault(false); |
| |
| QDialogButtonBox *buttonBox = new QDialogButtonBox; |
| buttonBox->addButton(connectButton, QDialogButtonBox::ActionRole); |
| buttonBox->addButton(quitButton, QDialogButtonBox::AcceptRole); |
| |
| QLabel *movieLabel = new QLabel(tr("Movie stream:")); |
| consumers[SctpChannels::Movie] = new MovieConsumer(this); |
| QLabel *timeLabel = new QLabel(tr("Time stream:")); |
| consumers[SctpChannels::Time] = new TimeConsumer(this); |
| QLabel *chatLabel = new QLabel(tr("&Chat:")); |
| consumers[SctpChannels::Chat] = new ChatConsumer(this); |
| chatLabel->setBuddy(consumers[SctpChannels::Chat]->widget()); |
| |
| connect(hostCombo, &QComboBox::editTextChanged, this, &Client::enableConnectButton); |
| connect(portLineEdit, &QLineEdit::textChanged, this, &Client::enableConnectButton); |
| connect(connectButton, &QPushButton::clicked, this, &Client::requestConnect); |
| connect(buttonBox, &QDialogButtonBox::accepted, this, &Client::accept); |
| connect(sctpSocket, &QSctpSocket::connected, this, &Client::connected); |
| connect(sctpSocket, &QSctpSocket::disconnected, this, &Client::disconnected); |
| connect(sctpSocket, &QSctpSocket::channelReadyRead, this, &Client::readDatagram); |
| connect(sctpSocket, &QSctpSocket::errorOccurred, this, &Client::displayError); |
| connect(consumers[SctpChannels::Time], &Consumer::writeDatagram, this, &Client::writeDatagram); |
| connect(consumers[SctpChannels::Chat], &Consumer::writeDatagram, this, &Client::writeDatagram); |
| |
| QGridLayout *mainLayout = new QGridLayout; |
| mainLayout->addWidget(hostLabel, 0, 0); |
| mainLayout->addWidget(hostCombo, 0, 1); |
| mainLayout->addWidget(portLabel, 1, 0); |
| mainLayout->addWidget(portLineEdit, 1, 1); |
| mainLayout->addWidget(buttonBox, 2, 0, 1, 2); |
| mainLayout->addWidget(movieLabel, 3, 0); |
| mainLayout->addWidget(timeLabel, 3, 1); |
| mainLayout->addWidget(consumers[SctpChannels::Movie]->widget(), 4, 0); |
| mainLayout->addWidget(consumers[SctpChannels::Time]->widget(), 4, 1); |
| mainLayout->addWidget(chatLabel, 5, 0); |
| mainLayout->addWidget(consumers[SctpChannels::Chat]->widget(), 6, 0, 1, 2); |
| setLayout(mainLayout); |
| |
| portLineEdit->setFocus(); |
| } |
| |
| Client::~Client() |
| { |
| delete sctpSocket; |
| } |
| |
| void Client::connected() |
| { |
| consumers[SctpChannels::Chat]->widget()->setFocus(); |
| } |
| |
| void Client::disconnected() |
| { |
| for (Consumer *consumer : consumers) |
| consumer->serverDisconnected(); |
| |
| sctpSocket->close(); |
| } |
| |
| void Client::requestConnect() |
| { |
| connectButton->setEnabled(false); |
| sctpSocket->abort(); |
| sctpSocket->connectToHost(hostCombo->currentText(), |
| portLineEdit->text().toInt()); |
| } |
| |
| void Client::readDatagram(int channel) |
| { |
| sctpSocket->setCurrentReadChannel(channel); |
| consumers[channel]->readDatagram(sctpSocket->readDatagram().data()); |
| } |
| |
| void Client::displayError(QAbstractSocket::SocketError socketError) |
| { |
| switch (socketError) { |
| case QAbstractSocket::HostNotFoundError: |
| QMessageBox::information(this, tr("Multi-stream Client"), |
| tr("The host was not found. Please check the " |
| "host name and port settings.")); |
| break; |
| case QAbstractSocket::ConnectionRefusedError: |
| QMessageBox::information(this, tr("Multi-stream Client"), |
| tr("The connection was refused by the peer. " |
| "Make sure the multi-stream server is running, " |
| "and check that the host name and port " |
| "settings are correct.")); |
| break; |
| default: |
| QMessageBox::information(this, tr("Multi-stream Client"), |
| tr("The following error occurred: %1.") |
| .arg(sctpSocket->errorString())); |
| } |
| |
| enableConnectButton(); |
| } |
| |
| void Client::enableConnectButton() |
| { |
| connectButton->setEnabled(!hostCombo->currentText().isEmpty() && |
| !portLineEdit->text().isEmpty()); |
| } |
| |
| void Client::writeDatagram(const QByteArray &ba) |
| { |
| if (sctpSocket->isValid() && sctpSocket->state() == QAbstractSocket::ConnectedState) { |
| sctpSocket->setCurrentWriteChannel(consumers.indexOf(static_cast<Consumer *>(sender()))); |
| sctpSocket->writeDatagram(ba); |
| } |
| } |